v3.26.1
Loans - Schedule of Credit Quality Indicators for Term Loans by Origination Year (Detail) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment [Line Items]    
Total $ 255,194 $ 239,882
Percentage of total 100.00% 100.00%
All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 227,703 $ 212,911
Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total 38,156 30,676
Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 164,550 $ 150,972
Percentage of total 72.00% 70.00%
Investment-Grade | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 162,829 $ 149,682
Investment-Grade | Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total 11,204 9,243
Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 57,114 $ 50,278
Percentage of total 23.00% 23.00%
Non-Investment- Grade | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 53,449 $ 47,675
Non-Investment- Grade | Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 26,873 $ 21,432
Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Percentage of total 5.00% 7.00%
Other Metrics/ Unrated | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 11,425 $ 15,554
Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 4,377 5,993
Year two 6,974 2,268
Year three 2,628 1,428
Year four 1,355 1,518
Year five 1,229 1,831
More than five years 3,430 2,006
Revolving 16,605 14,301
Revolving converted to term 87 87
Total 36,685 29,432
Corporate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 506 2,153
Year two 2,561 623
Year three 1,170 705
Year four 707 680
Year five 551 75
More than five years 531 477
Revolving 5,147 4,419
Revolving converted to term 0 0
Total 11,173 9,132
Corporate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 3,869 3,840
Year two 4,413 1,645
Year three 1,458 723
Year four 648 838
Year five 678 1,756
More than five years 2,899 1,529
Revolving 11,412 9,881
Revolving converted to term 87 87
Total 25,464 20,299
Corporate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 2 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
More than five years 0 0
Revolving 46 1
Revolving converted to term 0 0
Total 48 1
Commercial real estate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,361 6,406
Year two 6,147 4,711
Year three 4,730 1,566
Year four 1,418 2,084
Year five 1,806 2,120
More than five years 3,781 2,123
Revolving 17,384 16,963
Revolving converted to term 277 288
Total 36,904 36,261
Commercial real estate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 689 3,452
Year two 3,641 3,653
Year three 3,874 993
Year four 1,168 858
Year five 815 390
More than five years 1,512 851
Revolving 14,991 14,440
Revolving converted to term 175 185
Total 26,865 24,822
Commercial real estate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 605 2,866
Year two 2,504 1,058
Year three 856 545
Year four 250 1,225
Year five 990 1,730
More than five years 2,269 1,272
Revolving 2,393 2,523
Revolving converted to term 102 103
Total 9,969 11,322
Commercial real estate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 67 88
Year two 2 0
Year three 0 28
Year four 0 1
Year five 1 0
More than five years 0 0
Revolving 0 0
Revolving converted to term 0 0
Total 70 117
Residential real estate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,979 4,208
Year two 4,430 1,561
Year three 1,436 1,245
Year four 1,164 2,494
Year five 2,445 2,542
More than five years 2,782 326
Revolving 15,583 16,324
Total 29,819 28,700
Residential real estate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 254 1,242
Year two 1,255 89
Year three 42 90
Year four 76 86
Year five 85 15
More than five years 9 0
Revolving 14,346 14,624
Total 16,067 16,146
Residential real estate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,293 274
Year two 226 38
Year three 40 0
Year four 0 41
Year five 41 74
More than five years 95 19
Revolving 1,237 1,700
Total 2,932 2,146
Residential real estate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 432 2,692
Year two 2,949 1,434
Year three 1,354 1,155
Year four 1,088 2,367
Year five 2,319 2,453
More than five years 2,678 307
Revolving 0 0
Total 10,820 10,408
Securities-based    
Financing Receivable, Recorded Investment [Line Items]    
Year one 448 5
Year two 5 1,788
Year three 1,492 38
Year four 21 5
Year five 5  
Revolving 16,621 16,243
Total 18,592 18,079
Securities-based | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1 5
Year two 5 1,750
Year three 1,462 38
Year four 21 5
Year five 5  
Revolving 16,217 11,332
Total 17,711 13,130
Securities-based | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 447 0
Year two 0 38
Year three 30 0
Year four 0 0
Year five 0  
Revolving 369 305
Total 846 343
Securities-based | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0  
Revolving 35 4,606
Total 35 4,606
Other collateralized    
Financing Receivable, Recorded Investment [Line Items]    
Year one 4,983 14,674
Year two 15,615 6,117
Year three 5,702 3,183
Year four 2,744 816
Year five 709 1,006
More than five years 1,307 697
Revolving 71,109 70,523
Revolving converted to term 484 503
Total 102,653 97,519
Other collateralized | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 3,274 10,064
Year two 11,286 4,158
Year three 3,733 2,355
Year four 1,977 614
Year five 515 725
More than five years 1,139 590
Revolving 65,962 64,769
Revolving converted to term 484 503
Total 88,370 83,778
Other collateralized | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,709 4,475
Year two 4,176 1,881
Year three 1,898 735
Year four 680 178
Year five 173 233
More than five years 81 63
Revolving 5,114 5,754
Revolving converted to term 0 0
Total 13,831 13,319
Other collateralized | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 135
Year two 153 78
Year three 71 93
Year four 87 24
Year five 21 48
More than five years 87 44
Revolving 33 0
Revolving converted to term 0 0
Total 452 422
Other    
Financing Receivable, Recorded Investment [Line Items]    
Year one 291 674
Year two 682 323
Year three 282 92
Year four 81 23
Year five 20 22
More than five years 21 3
Revolving 1,673 1,783
Total 3,050 2,920
Other | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 123 618
Year two 617 251
Year three 251 81
Year four 81 22
Year five 19 22
More than five years 18 0
Revolving 1,534 1,680
Total 2,643 2,674
Other | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 168 56
Year two 65 72
Year three 31 11
Year four 0 1
Year five 1 0
More than five years 3 3
Revolving 139 103
Total 407 246
Other | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
More than five years 0 0
Revolving 0 0
Total $ 0 $ 0